GEARONIC TM 10000mah Ultra Thin Dual USB External Portable Power Bank Backup Battery Charger for Cell Phone - Blue Dimensions: 5.25 x 2.75 x 0.4 inches Battery Capacity: 10000mAh Easily slips into a pocket, you can bring it to anywhere, very convenient to use it to charge your smart devices. Compatible with all Digital device with USB Connector Product of GEARONIC TM, Trademark Registered.